Investments Limited Partnership Investment (Details) (USD $)	3 Months Ended
Mar. 31, 2013
Schedule of Cost-method Investments [Line Items]
Payments to Acquire Limited Partnership Interests	$ 750,000
Proceeds from Limited Partnership Investments	7,000
Fair Value of Limited Partnership Interest	743,000
Contribution to Limited Partnership	375,000
Note Receivable from Limited Partnership	$ 368,000

Cash inflow received as distributions, returns of capital, or sale proceeds from partnership interests held for investment purposes.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration